What is the work to be done to increase the velocity of a car from 30 km per hour to 60 km per hour if the mass of the car is 1500 kg
Answers
Answered by
7
Given: u=30m/s = 150/18
v=60m/s= 300/18
m=1500kg.
Work = change in kinetic energy
= final Ke - Initial Ke
= 1/2×mv^2 - 1/2×mu^2
= 1/2 m (v^2-u^2)
= 1/2 × 1500 (300×300-150×150/18×18)
= 750 ( 90000-22500/324)
= 750 ( 67500/324)
= 156250J.
Pls Mark As BRAINLIEST.
v=60m/s= 300/18
m=1500kg.
Work = change in kinetic energy
= final Ke - Initial Ke
= 1/2×mv^2 - 1/2×mu^2
= 1/2 m (v^2-u^2)
= 1/2 × 1500 (300×300-150×150/18×18)
= 750 ( 90000-22500/324)
= 750 ( 67500/324)
= 156250J.
Pls Mark As BRAINLIEST.
Answered by
0
Answer is 2025000 because final - initial.
Aviral101:
no wrong. Because he did not change km/h into m/s.
OK sorry multiple the velocity by 5/18
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